Microservices Homework 2

This repo contains a simple CRUD Rest service written in Scala 2.13. The forder UserService contains the source code of the service and docker files. You can use docker-compose.yml file for debug the service with Postgresql database. The application uses Cats Effects 3, Log4Cats, Cats.Core, Doobie, Quill.

Prerequisites

To run this example you need following software installed:

1. Docker
2. Minikube (following addons needs to be enabled: default-storageclass, ingress, storage-provisioner)
3. Helm
4. SBT (Optionally if you aim to build scala application manually)
5. Newman or Postman (Optionnally, if you want to launch postman collection)

Building the docker image

Note: This step can be skipped as an image is already published to dockerhub.

There are two ways of building the image

1. If you have SBT installed - build the native image with commands:
   $ sbt assembly
$ docker build --build-arg port=8000 -t users:0.1.0 -f Dockerfile.javabuild .
   
2. Using docker build command (staged build): $ docker buildx build --build-arg port=8000 -t users:0.1.1 -f Dockerfile.staged .

Install the application

1. Download Postgresql dependency by runnnig command
   helm dependency update userservice-chart
2. Run command
   helm install first-release userservice-chart The database will be installed as a dependency of userservice-chart.
3. Esposing a service to localhost (Windows): minikube tunnel
4. Setting up an arch.homework host - please add 127.0.0.1 arch.homework to your hosts file (C:\windows\system32\drivers\etc\hosts on Windows)

Running test

_Note: Before running tests please wait for 20-30 seconds to allow application to start

1. Ensure that minikube tunnel is estabilihed ( command minikube tunnel)
2. Change directory to manifest
3. Launch newman tests: newman run Homework-Users.postman_collection.json